GRASS (the Geographic Resources Analysis Support System) is a software raster- and vector-based GIS (Geographic Information System), image processing system, graphics production system, and spatial modeling system. It contains many modules for raster data manipulation, vector data manipulation, rendering images on the monitor or paper, multispectral image geocoding and processing, point data management and general data management. It also has tools for interfacing with digitizers, scanners, and the PostgreSQL, DBF, and ODBC connected databases. GRASS operates on all common operating systems.

taccGL is a JavaScript canvas library for animating HTML elements and 3D objects as integrated scenes with depth buffering and shadows. It uses the GPU-accelerated HTML5 canvas (WebGL).
Features include accelerated motion in 2D and 3D space, rotating, mapping of HTML elements on 3D objects, custom shaders, etc. The library loads 3D models from OBJ files.
In WebGL mode, animations mostly run inside the GPU.
Otherwise, there is a restricted fallback to the 2D canvas.

view3dscene is a browser for VRML (1.0 and 2.0)
and X3D, and a viewer for other 3D model formats
(3DS, MD3, Wavefront OBJ, and Collada are
handled). It supports viewing the scene in the
"Examine" mode and walking in the virtual world
with features such as collision detection and
gravity. Rendering is done using OpenGL. Many advanced 3D graphic effects are available, like mirrors (flat and through cube environment mapping), shadows (shadow maps and shadow volumes), GLSL shaders and more. The program can also convert files from 3DS, MD3, Collada and other formats to X3D and pretty-print VRML and X3D files.

RainbruRPG is a 3D multiplayer Role Playing Game project based on Ogre3D and CEGUI. It is based on an Object Oriented design through C++ and Ruby modules and a community-oriented concept through a wiki.

The Noble Ape Simulation is a collection of a number of autonomous simulation components including a landscape simulation, biological simulation, weather simulation, sentient creature (Noble Ape) simulation, and a simple intelligent-agent scripting language (ApeScript). Noble Ape also contains a social simulation where the Noble Apes can be tracked in terms of social groups and also over many generations to explain social phenomenon to users looking to study this kind of interaction. It has been in development for more than a fifteen years.

Avogadro is an advanced molecule editor and visualizer designed for cross-platform use in computational chemistry, molecular modeling, bioinformatics, materials science, and related areas. It offers flexible high quality rendering and a powerful plugin architecture.

white_dune is a graphical VRML97/X3DV editor, simple NURBS/Superformula 3D modeller, animation tool, and VRML97/X3DV commandline compiler in development. VRML97 (Virtual Reality Modeling Language) is the ISO standard for displaying 3D data over the Web via browser plugins ("HTML for realtime 3D"). X3DV is the direct successor of VRML97. VRML97 and X3DV have support for animation, real-time interaction, and multimedia (images, movies, and sounds). white_dune can read, create, and display VRML97/X3DV files and let the user change the scenegraph/fields. It also has support for stereoscopic view via "quadbuffer"-capable stereo visuals, and support for 3D input devices like a joystick, spaceball, or magnetic tracker.

Oolite is an independent reinterpretation and ehancement of the classic space sim game Elite for modern computers. The result is a space trading and combat simulation offering encounters with pirates, police, bounty hunters, the occasional alien menace, and other surprises along the way. While striving to reach the coveted Elite status, the players set their own path through the various galaxies, choosing to be trader, pirate, or bounty hunter depending on the situation at hand, and their own judgement. The game is hugely expandable, using a combination of property lists and JavaScript. Oolite's active modding community already provides more than 200 OXPs (Oolite eXpansion Packs). Among them are a huge variety of missions, weapons, ships, and extra career paths over and above what's available within the core game, as well as a number of other gameplay enhancements and customizations.